See how rancher labs compares to other vendors in security performance
A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,
Impact
A vulnerability has been identified in Rancher Manager that allows users assigned the Project Owner role to modify Pod Security Admission (PSA) labels on namespaces within their projects. Under the default role configuration, an attacker with the following access pattern can exploit this issue: 1. Cluster Access: The user is granted Cluster Member access. 2. Project Ownership: The user creates or is assigned ownership of a project. 3. Namespace Creation: The user creates a namespace within that project. 4. PSA Modification: The user modifies the namespace PSA configuration to use the privileged profile. 5. Privilege Escalation: The user deploys privileged workloads within the namespace.
As outlined in the Kubernetes Pod Security Standards documentation, privileged containers disable core Kubernetes security protections, allowing workloads to bypass standard container isolation boundaries. This can result in privilege escalation within the cluster environment.
Potential impacts include: - Deployment of privileged containers - Access to host-level resources - Container breakout - Cluster privilege escalation - Compromise of workloads running on affected nodes
Please refer to the associated MITRE ATT&CK techniques for further information about this category of attack: - Deploy Container - Escape to Host - Exploitation for Privilege Escalation
Reference: Kubernetes Pod Security Standards — Privileged Profile
Patches This vulnerability is resolved by modifying the project-owner role to explicitly define the allowed verbs for projects resources instead of using the wildcard () permission.
The updated role configuration removes access to the updatepsa verb. This prevents project owners from modifying PSA settings in a manner that could enable privilege escalation.
Patched versions of Rancher include releases v2.12.10, v2.13.6, and v2.14.2.
Workarounds If upgrading is not immediately possible, administrators should create a custom project role based on the existing Project Owner role, while removing unrestricted wildcard permissions for project resources.
The allowed verbs for projects should be restricted to: “get, update, delete, patch, create, list, watch, deletecollection” instead of “”.
This prevents access to the updatepsa capability that enables the privilege escalation path.
References If you have any questions or comments about this advisory: - Reach out to the SUSE Rancher Security team for security related inquiries. - Open an issue in the Rancher repository. - Verify with our support matrix and product support lifecycle.
A flaw was found in Rancher Manager. The SAML assertion replay protection introduced by the fix for CVE-2026-44946 recorded consumed assertion IDs in a per-process cache, so each replica only detected replays that reached the same pod. In a high-availability deployment, an attacker holding a captured assertion could replay it once against every other replica to obtain additional authenticated sessions as the victim.
This issue affects Rancher: before 2.15.1.
A flaw was found in Rancher Manager. When a non-administrative caller supplied a label selector naming a different user, the ext.cattle.io/v1 Token store dropped its internal owner filter instead of returning an empty result. Any authenticated user could therefore list and watch every other user's tokens, disclosing token metadata and the stored salted hash of the bearer token.
This issue affects Rancher: before 2.15.1.
End of life: 1/31/2023, End of support: 1/5/2022, Latest version: 2.5.17
End of life: 1/31/2023, End of support: 1/5/2022, Latest version: 2.5.17
End of life: 11/1/2019, End of support: 5/1/2019, Latest version: 2.0.16
End of life: 11/1/2019, End of support: 5/1/2019, Latest version: 2.0.16
End of life: 10/15/2020, End of support: 4/15/2020, Latest version: 2.2.13
End of life: 10/15/2020, End of support: 4/15/2020, Latest version: 2.2.13
End of life: 4/7/2021, End of support: 10/7/2020, Latest version: 2.3.11
End of life: 4/7/2021, End of support: 10/7/2020, Latest version: 2.3.11
End of life: 4/30/2024, End of support: 3/1/2023, Latest version: 2.6.14
End of life: 4/30/2024, End of support: 3/1/2023, Latest version: 2.6.14
End of life: 7/22/2025, End of support: 9/22/2024, Latest version: 2.8.15
End of life: 7/22/2025, End of support: 9/22/2024, Latest version: 2.8.15
End of life: 11/18/2024, End of support: 5/15/2024, Latest version: 2.7.18
End of life: 11/18/2024, End of support: 5/15/2024, Latest version: 2.7.18
End of life: 3/31/2022, End of support: 7/30/2021, Latest version: 2.4.18
End of life: 3/31/2022, End of support: 7/30/2021, Latest version: 2.4.18
End of life: 4/19/2020, End of support: 10/19/2019, Latest version: 2.1.14
End of life: 4/19/2020, End of support: 10/19/2019, Latest version: 2.1.14
End of life: 6/30/2020, End of support: 12/31/2019, Latest version: 1.6.30
End of life: 6/30/2020, End of support: 12/31/2019, Latest version: 1.6.30
End of life: 2/26/2026, End of support: 2/26/2025, Latest version: 2.9.12
End of life: 2/26/2026, End of support: 2/26/2025, Latest version: 2.9.12
End of life: 6/19/2026, End of support: 6/19/2025, Latest version: 2.10.12
End of life: 6/19/2026, End of support: 6/19/2025, Latest version: 2.10.12
End of life: 10/24/2026, End of support: 10/24/2025, Latest version: 2.11.17
End of life: 2/28/2027, End of support: 2/28/2026, Latest version: 2.12.13